Impulse sender mechanism



Nov. 30, 1937. Q RINKOW 2,100,518

IMPULSE SENDER MECHANISM Filed March 6, 1935 F'IG.1 FIG.2

E PIC-5.3 FIG.4' 2 1 4 {'K i m FIG.5 F'|G.6

FIG.7 Fl6.8 Y 12 12 F|G.9 FIGJO FIG." FIGJZ I l x '25 22' 23 INVENTOR OTTO RIN KOW ATTORNEY.

' in which case the impulses are Patented Nov. 30, 1937 UNITED STATES 2,100,518 IMPULSE SENDER MECHANISM Otto Rinkow, Berlin, Germany,

assignor to Siemens & Halske Aktiengesellschaft, Siemensstadt, near Application March Berlin, Germany 6, 1935, Serial No. 9,564

In Germany March 13, 1934 4 Claims.

The invention relates to an impulse sender for the automatic establishment of telephone connections and particularly to impulse sending devices of the type in which in order to call a telephone subscriber only a single operation of the setting device is necessary.

In such arrangements the setting member which preferably comprises an adjustable slider or the like has associated with it cams or projections operating similarly, the relative spacing of which in each row is different, and which correspond to the call number of the desired subscriber and serves to determine the beginning or end of the transmission of the impulse trains separate continually operating interrupter member and only certain of the continually generated impulses become operative. The cams therefore control the impulse contact'to transmit impulse series of different values.

The actual construction of the other parts of the impulse sender mechanism for this purpose can be any desired one and does not form the subject matter of the present invention. In any case, however, for each of the privileged subscribers connected to the impulse sender it is necessary to provide a plurality of camswhich springs in order to secure them for each series corresponding to a different suball the series of cams.

Since, with such impulse senders it is desirable to arrange that any one of the various subscribers can be replaced by another, it is necessary in this case for the cams associated with the original subscriber to be given a different position on the carrier corresponding to the call number of the new subscriber. It is therefore important that such an alteration of the cams shall be possible without the disturbance or removal of the carrier, and this is attained according to the invention in that the cams comprise movable riders which are secured to their carrier by holding members in the form of projections.

structed as detachable riders are employed provided with holding members in the form of to their carrier, while a further form contemplates the use of a common spring holding member for the riders.

The material for these riders is preferably sheet metal, but any other material erties can be employed. If the riders are constructed of metal the necessary springiness can be obtained by a suitable shaping of the holding generated by a The invention will be pointed out in the following description, which, together with the drawing, shows a number of different embodiments.

Fig. 1 is a front view 01 a disc shaped carrier with a single rider in position;

Fig. 2 is a side view of a single rider;

Figs. 3 and 4 are views of a bar shaped carrier having the same type of rider as Fig. 1;

Figs. 5 to 8 show another form of the rider in views similar to Figs. 1 and 4; and

Figs. 9 to 12 show an additional form of the rider in views also similar to Figs. 1 to 4.

The rider l shown in the embodiment of Figs. 1 to 4 consists preferably of sheet material which can be stamped and isprovided with stamped out projections 2 for securing the rider to its carrier. For this purpose holes 4 are provided near the edge of the carrier, for example on a disc 3 which is mounted on a rotatable shaft and the projections 2 of the rider project through these holes 4 and may be secured to the disc 3 by bending over. The shape of the rider and also its securing members need naturally not be exactly as shown. It is important, however, that the cams or riders should be firmly secured and yet readily replaceable. The riders-can also be of a difierent size and may be separate from their securing member 2.

Instead of using a disc as carrier for the riders a bar 5 with holes 4 may be used as shown in Figs-3 and 4 according to the particular construction of the impulse sender. As may be seen the arrangement shown and described, particularly when used with a special tool designated therefor permits very ready replacement and alteration of thecams in their position on the carrier or disc without removing the discs from the case of the impulse sending device.

The rider ll shown in Figs. 5 and 6 consists of stamped material having projections l2 which form the holding members, and when the rider is mounted, are located on opposite sides of the edge of the carrier IS. The longer of the two projections I2 is more flexible than the other and is provided with a pip on its free end. In order to provide for the mounting and securing of the riders the disc or carrier l3 has around its periphery and close to its edge, notches or cut-away portions l4 and holes l5 arranged so that the longer projection I2 of' the rider H in mounted position engages with secures itself by means of its springiness. riders H are thus securely held their carrier or disc while at the same time they can easily be removed or exchanged by slightly raising the spring arm without there being any necessity to remove the carrier or disc from the casing.

The embodiment shown in Figs. '7 and 8 differs from that in Figs. 5 and 6 by a slightly difierent construction of the rider and also the carrier, which latter consists of a bar with the same arrangement of the cut-away portions l4 and l5. One of the projections |2 of the rider II in this case is constructed as a separate part, the other arrangements being the same. Obviously the riders can be provided with spring holding members of a different shape. Moreover, a plurality of such holding members can be provided on difierent sides of the portion of the rider forming the cam. It is important, however, that whatever arrangement is adopted the cam should its pip in the hole l5 and The be easily interchangeable without removing the carrier from the case and that it should be held firmly in position.

- The riders 2|, shown in Figs. 9 and 10, can be constructed of any desired material, and in their mounted position have their projections 22 extend over the edge of the carrier or disc 23 which for this purpose is provided at its edge with cutaway portions 24 in order to determine the position of the riders 2| accurately. One of the projections 22 is longer than the other and its end is so shaped that it is engaged by the correspondingly bent edge of a circular spring disc 25 mounted on the axis of the disc or carrier 23, so as to maintain the rider on the carrier. Instead of acommon spring for all or part of the riders 2|, it is of course possible to provide a separate correspondingly constructed spring for each of the riders. Moreover, the construction of the riders and the spring can be diiIerent from that shown.

In the embodiment in Figs. 11 and 12 a leaf spring 25 serves as a holding spring for the riders 2| and it either extends over the whole length of the bar-shaped carrier 23, or a plurality of springs are provided each of which is associated only with a definite number of riders.

By means of the arrangements shown and described riders are securely mounted on their carrier or disc but at the same time can be rapidly interchanged by the raising of the spring porin position on I tion operating on the rider without it being necessary to remove the carrier from its casing.

Having described the invention, what is considered to be new and is desired to be protected by Letters Patent will be set forth in the following claims.

What is claimed is:

1. In a rotatable disc for transmitting a code designation, said disc having a plurality of spaced notches cut in the periphery thereof, riders disposed in said notches and having a portion extending beyond the periphery of said discs, the number of said riders being in accordance with a particular code designation, means formed on said riders engaging said notches for holding said riders in place as said disc is rotated, other holding means on each disc, and other means formed on said riders and cooperating with said last holding means for detachably securing said riders to said disc as a rider is pressed into place.

2. In a rotatable disc for transmitting code designations, said disc having a plurality of spaced openings cut in the periphery thereof, a plurality of riders disposed around' the periphery of said disc in accordance with a particular code, each rider shaped to engage an opening in the disc, and a common flexible means engaging all of said riders for detachably securing all of said riders to said disc.

3. In a rotatable disc for transmitting code designations, said disc having a plurality of spaced notches cut in its periphery, a plurality of riders disposed around the periphery of the disc in accordance with a particular code designation, each rider having a pair of legs formed thereon engaging opposite sides of said disc in one of said notches, and a single flexible member engaging one of thelegs of all of said riders for removably holding said riders on said disc.

4. A rotatable disc for the automatic trans mission of code designations, said disc having a plurality of spaced notches cut in its periphery, a plurality of riders disposed around the edge of said disc in accordance with a particular code designation, a pair of extensions formed on each rider engaging opposite sides of said disc in one of said notches, one of said extensions having a projection formed thereon, and a common flex-,.

ible disc on one side of said rotatable disc having a bent portion on its periphery for engaging the projection on all of said riders for removably supporting the same on said disc.

' O'I'I'O RINKOW. 

